I have a question about that. If you take no battle damage, like if your defense-position monster is destroyed by battle and the opponent's monster doesn't have a pierce ability or if your ATK-position monster is destroyed but you discard Kuriboh, can you activate cards that require battle damage? Like can you activate Damage Condenser and Special Summon a monster with 0 ATK? Or special summon Tragoedia from you hand?